Grooving tool



S. CARELLI June 18, 1940.

GROWING TOOL v Filed June 17, 1938 J JeVENTOR Patented June 18, 1940 UNITED STATES GROOVING TOOL Sam Carelli, Atlanta, Ga., assignor to David M. Shuman, Atlanta, Ga.

Application June 17, 1938, Serial Nb. 214,383

3 Claims.

This invention relates to grooving tools and more particularly to rotary grooving tools. In the manufacture and repairing of shoes, it is customary to groove the outer faces of the welts and 5" the inner faces of the soles, apply to the respective grooved faces a suitable glue or cement, attach the soles to the welt in a manner wherein the grooves and projections of the welts interfit with the projections and grooves of the soles, and

1'0 subject the assembly to a cold or heating process under pressure to affix the soles to the welts.

Ordinarily, in grooving the faces of the soles and welts a rotary grooving tool is employed formed witha plurality. of tangently extending 1'5- V shaped teeth, the apex ends of which are fashioned with radially extending V shaped cutting elements adapted for rotary engagement with the sole or welt for inscribing therein a plurality of Inasmuch as the shafts on which the grooving tools are fixed usually contain other tools for other operations in the manufacture or repairing of shoes, the removing of a grooving tool oftentimes necessitates the removal. of other tools thereby resulting not only in a loss of time but also a considerable monetary loss due to the inoperativeness of the other tools during the period of replacement. Furthermore, due to the tangently extending teeth of the ordinary grooving tools it is not possible to reverse the tool on the shaft and present the sharp edges on the reverse side of the cutting elements for grooving operations.

It is therefore one of the principal objects of this invention to provide a grooving tool equipped with removable blades having cutting elements formed thereon whereby to efiect an economy in replacement,

Another principal object of the invention is to provide a grooving tool of the above described character equipped with means for permitting the removal of the blades without removing the tool from the shaft thereby reducing to a 50 minimum the replacement period and resultant loss of time and expense in those instances where the tool is mounted on a shaft having a plurality of other tools mounted on the shaft and on each side of said grooving tool.

55 A special object of the invention is to provide a tool of the above described character equipped with blades having cutting or grooving elements both so constructed and arranged to permit the tool as a unit to be reversed on the shaft to present the sharp edges on the reverse sides of the cutting elements for grooving operations.

Another special object .of the invention is to provide removable blades equipped with cutting elements so constructed and arranged whereby said blades maybe reversed relative to the tool.

Another object of the invention is to provide a tool of the above described character wherein selected blades may be removed for replacement without the necessity of removing the other blades thereon.

A further object of my invention is to provide a grooving tool of the above described character equipped with means for reliably securing the blades on the tool in a manner whereby the cutting elements of the blades are presented in circumferential alignment atall times for inscrib-' ing substantially uniform grooves.

A still further object of the invention is to provide a tool of the above described character wherein the blades are maintained in a removable holder and also extend radially relative to the shaft, thereby permitting reversal of the tool on the shaft.

An'important object of the invention is to provide the detachable blades with cutting or grooving elements so constructed and arranged that when the blades are removed for repositioning in reverse order, the shape of the cutting elements will denote the reverse position thereby permitting the bladesto be quickly and efiiciently reversed.

Other'objects and advantages will be. apparent from the following description, appended claims and annexed drawing. I Referring to the drawingwherein like referthe several views:

are

Figure l is a side elevation of the invention illustrating the same attached to a section of a drive shaft. 1 I

Figures 2 and Bare sectional views taken on the lines 2-2 and 3-3 of Figure 1 respectively.

In practicing the invention there is provided a bosses ll formed on the sidesof a, cylindrical 10 shaped holder l2. Suitable bolts 43' extend through the members 6 and holder l2 and 'clamp the holder between the members 6. The holder I2 is provided with a bore through which the shaft 1 extends, and said bore is of a slightly larger diameter than the shaft whereby to permit longitudinal adjustment of the holder between the members 8 and. the shaft.

The outer peripheral faceoftheholder I2 is fashioned with a plurality of inwardly and longimodating detachable blades l5. ,Theblades l5 are provided with longitudinally extending ,end sections IE for engagement withthe inner faces of the ribs 18 and the inner walls of the slotsv H! are arranged a sufficient distance inwardly, of the peripheral face of the holder to serveasseats for the blades: and dispose the sections H5 in engagementlwith the ribs as clearly illustrated in Fieu a 1 From the foregoing it will be apparent that wherrthe blades l5 are inserted in. the slots Hi the sections-underlie and .gengage the inner circumferentially, extending faces of the ribs Ill whereby removal or dislodgement isprecluded a when the members 6 and holder I2 tare clamped or :iixed together -bythe, bolts 13,, The outer ends of the blades l5 are fashioned withecutting or grooving elements on teeth 11 each having an inclined-face I8. Obviously, rotation of the shaft 1 serves to rotate the holder i2 and when awork piece, for instance a sole or. welt, is presented,

against the cutting elements ,I] and moved trans versely relativeto the shafts the-cutting elements will inscribe aplurality of spaced grooves in the I face of the work piece; When the cutting elemerits becorne dull one-of the set screws 9 is loosened and likewisethe bolts [3, therebypermitting one .of the members 6 to be moved a sufficient distance longitudinally'of the shaft '1 to gether by-the bolts [3 and fixed'to the shaft for rotation through the medium of'the set screws .2a 9,thereby presenting th e o p-posite' or'reverse sides of the cuttingelement for grooving operations; 7

tudinally extending spaced slots M foraccomdisengage and space, the holder from the ,other In instances where it is desired to reverse the tool as a unit on the shaft, the same may be readily accomplished through the manipulation of the set screws 9 without loosening the bolts [3.

adapted to receive a shaft with the bore of said holder. of a larger diameter than the bores of said members to permit abaxial positioning of said holder relative to said members upon separation of the latter to effect progressive removal and replacement ofsaid blades upon rotation of said holder relative to said members.

2.-'A tool of the class described, comprising, a pair of coupling members having a bore and adapted to be secured to ashaft for rotation therewith, a holder interposed between said members and having a bore .of a larger diameter than the bores ofsaid coupling members, blades detacha-bly mounted insaid holder for movement therewith, and fastening devices extending entirely through said holder and connected to each of said members for clamping said holder therebetween for, maintainingsaid blades in said holder, said, devices remova blewith respect to said holder and one of said members to effect separation of said members and abaxial positioninglof said holder with respect to said members topermit progressive removal and replacement r of said blades upon rotation of said holder relative to said members' 7 3. A tool of the class described, comprising, a

'pair of coupling members having a bore and adapted to be secured'toa, shaft for rotation therewith, a holder having a bore of a larger diameterthan thebores of said coupling members: and adapted to receive said shaft, radially extending blades :detachablymounted in said holder, means on said coupling members circumjacent to the ends of the holder and said blades for securing said blades in said holder, and fastening devices connected to each of said members and extending fentirelyj through the holder and clamping the latter to saidmembers and coacting with said means to maintain said blades in said holder against removal and to effectmovement of the holder with the members,

all of said devices accessible and adjustable from oneendof saidtool for removal from one of said members and said holder to permit separation of said; members and abaxial positioning of said holder with respect to said members to effect progressive removal and replacement of said blades upon rotation of said holder relative to said members. e a

1 SAM CARELLL 

